Indeed, GPUs (and Optimus and similar tech) are sometimes a pain point with Linux. Of course, this isn't a problem at the office, so my lowly Thinkpad works great and I don't have to worry about videogames :)

At home, I've been using Linux exclusively for more than a decade now and I also use it for gaming. I had an HP Envy laptop with a Radeon GPU and it mostly worked, though there were glitches in some games. Recently it broke down so I bought a Lenovo Ideapad with an Nvidia GPU -- I know Nvidia is problematic on Linux, so I'll let you know how it goes ;)